org.gjt.jclasslib.structures
Class AbstractStructureWithAttributes

java.lang.Object
  org.gjt.jclasslib.structures.AbstractStructure
      org.gjt.jclasslib.structures.AbstractStructureWithAttributes

Direct Known Subclasses:

AttributeInfo, ClassFile, ClassMember

public abstract class AbstractStructureWithAttributes
extends AbstractStructure

Base class for all structures with attributes.

Version:

$Revision: 1.4 $ $Date: 2003-08-18 07:52:54 $

Author:

Ingo Kegel

Field Summary

protected AttributeInfo[]

attributes Attributes of this structure.

Fields inherited from class org.gjt.jclasslib.structures.AbstractStructure

classFile, debug, SYSTEM_PROPERTY_DEBUG

Constructor Summary

AbstractStructureWithAttributes()

Method Summary

AttributeInfo	findAttribute(java.lang.Class attributeClass) Find an attribute of a certain class.
AttributeInfo[]	getAttributes() Get the attributes of this structure.
protected int	getTotalAttributesLength() Get the length of all attributes as a number of bytes.
protected void	readAttributes(java.io.DataInput in) Read the attributes of this structure from the given DataInput.
void	setAttributes(AttributeInfo[] attributes) Set the attributes of this structure.
protected void	writeAttributes(java.io.DataOutput out) Write the attributes of this structure to the given DataOutput.

Methods inherited from class org.gjt.jclasslib.structures.AbstractStructure

debug, getClassFile, getDebug, getLength, printAccessFlags, printAccessFlagsVerbose, printAccessFlagsVerbose, printBytes, read, setClassFile, setDebug, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

attributes

protected AttributeInfo[] attributes

Attributes of this structure.

Constructor Detail

AbstractStructureWithAttributes

public AbstractStructureWithAttributes()

Method Detail

getAttributes

public AttributeInfo[] getAttributes()

Get the attributes of this structure.

Returns:

the attributes

setAttributes

public void setAttributes(AttributeInfo[] attributes)

Set the attributes of this structure.

Parameters:

attributes - the new attributes

findAttribute

public AttributeInfo findAttribute(java.lang.Class attributeClass)

Find an attribute of a certain class.

Parameters:

attributeClass - the class of the attribute

Returns:

the found attribute, null if not found

readAttributes

protected void readAttributes(java.io.DataInput in)
                       throws InvalidByteCodeException,
                              java.io.IOException

Read the attributes of this structure from the given DataInput.

Excpects DataInput to be in JVM class file format and just before an attribute length field.

Parameters:

in - the DataInput from which to read

Throws:

InvalidByteCodeException - if the byte code is invalid

java.io.IOException - if an exception occurs with the DataInput

writeAttributes

protected void writeAttributes(java.io.DataOutput out)
                        throws InvalidByteCodeException,
                               java.io.IOException

Write the attributes of this structure to the given DataOutput.

The written bytes are in JVM class file format.

Parameters:

out - the DataOutput to which to write

Throws:

InvalidByteCodeException - if the structure is internally inconsistent

java.io.IOException - if an exception occurs with the DataOutput

getTotalAttributesLength

protected int getTotalAttributesLength()

Get the length of all attributes as a number of bytes.

Returns:

the length